Calculating machine



Ev mmsn Dec. l, 1936..-

' cALcuLATING ncHINE Filed Feb. 15, 1935 `2.A Sheets-Sheet 1 Dec.. l, 1936. E. BENNINGER 2,062,963

CALCULATING CHINE Filed Feb. 15, 19:55 2 sheets-sheet 2 Patented Dec. l, 1936 UNITED STATES AiniTENlr OFFICE Application February 15, 1935, Serial No. 6,'352 In Switzerland and Germany February 26,

1 claim. (ol. zassol p The present invention relates to an improved calculating machine and more especially to calculating machines of the type in which selecting l pins are slidably arranged in consecutive rows on 'a movable carrier, the said pins being adapted to be set by a plurality of "numeral keys and which said selecting pins when set allow the cara rier to advance one step or a plurality of steps. The principal object of the invention is` to provide an improved construction of the means to -set the selecting pins.

" With this and incidental objects in View, the invention consists in certain novel features of construction and combinations of parts, the es- 15 sentiai elements of which are set forth in appended claim, anda preferred form of embodiment of which is hereinafter'described with reference to the drawings which accompany and form part of the specication. In the drawings only the novel devices are shown and of all the elements of the calculating machine only those are diagrammatically illustrated which are necessary for the understand-1 ing of the invention. On the drawings:

Fig. l shows ina plan view` the carriage with the selecting pins and some keys and the means to stopthe carriage;

Fig. 2 is a top view of the lever` toy stop the carriage and means to release, displace said stop temporarily;

Fig. 3 shows thev stop lever-releasing pin in side elevation seen in the direction of arrow A;

Fig. 4 illustrates in side elevation part of the carriage the parts being shown as seen in the direction of arrow 13y o! Fig. i;

Fig. 5 shows the stem of a selecting pin and a springv to retain same in its position;

Figs. 6, 7 and 8 are side elevations'of parts of the keys and the selecting pins and of the carrier illustrating the co-operation of the said parts; i I

Fig. 9 is a side elevation of a part of the calculating machine to which the improvements are applied, the parts being shown in a diagrammatical manner.

In the drawings IIl denotes a carriage or carrier of selecting pins of known construction. The

carrier I0 comprises two plates II, I2 (Figs. 1, 4, 0 6, 7 and 8) arranged parallelto each other and rigidly connected with each other. In holes of the plates I I, I2 selecting pins I3 are slidably arranged in parallel rows denoted 0-9. The elements I3 are movable in the direction of the arrows D (Fig. 4) The elements of the rows I to 9 are of substantially rectangular cross-section. The stem of each pin i3 o the row marked 0 is provided with a lug i8 (Fig. 5). Between the adjacent sides of two selecting pins I3 there is arranged a U-shaped blade spring i5 which rests `5 on the lower plate l2. One shank i6 of the blade spring I5 presses against'a projectionl I4 of a pin I3, the other shank which is provided with guiding laps Il embraces the adjacent pins I3. The springs l5 are designed to retain the select- 10 ing pins in their positions.

coiled spring 'i9 interconnects the carrier I0 and the frame o the calculating machine. The spring i9 (Fig. 1) tends to draw the carrier in the direction of the arrows `E (Fig. 1). The 15 carrier It! is slidably mounted on guides in the frameof the machine in the well known manner (not shown in the drawings).

On a bolt 2d 'of the machine frame a double armed lever til is rotatably mounted. To one 20 arm of the lever 2l e. coiled spring 22 is attached which tends to draw the said arm against a fixed abutment 23. To the other arm of the lever 2l a pawl 24 is pivotally connected. The pawl 24 rests against the lug i8 of the rst selecting 25 pin I3 of the row (l. A spring 26 attached to the 'said pawi 24 and to the frame of the machine tends to hold the nose 25 in the locking position, shown in Fig. l. Above the plate It of the carrier ill and running parallel thereto a 30 shifting rod 2l is arranged which is connected t two arms 28, 29 pivotally mounted in the frame of the machine, by means of the shaft Sil.

3l, 32 and 33 (Figs. 16, 7, 8) denote three numeral keys marked 0, 00 and 000 respectively 35 which are slidably mounted in the frame of the calculating machine. The keys 3|, 32 and 33 are movable each againstv the action of a spring B9 (Fig. 9) in the direction ofthe arrows F (Figs. 6 8). The key 3l is provided withv an arm 3i 40 (Figs. l and 6) having a downwardly projecting foot 35 (Fig. 6). The foot 35 is positioned in the plane Gr-G in which all the selecting pins I3 of the (l-row are arranged. The dimension "o oi the foot 35 is equal to the dimennon b of a selecting pin I3. The key 32 is provided with a foot 36 (Fig. '7). The dimension b" of the foot 36 exceeds slightly the distance b3 of two consecutive lugs i8. The foot 36 of the key 32 is positioned outside the plane G-G, but well within the reach of the lugs I8 oi the selecting pins I3 of the 0-row. The arm 3l interconnects the foot 36 with the corresponding key. The dimension b4 of the foot 38 of the key 33 is about twice the distance baci two consecutive lugs I8. The u 4direction of the arrow 46 (Fig. 1).

j32, 33 is provided with an extension 48 which rests on the rod 21. A spring not shown in the drawings keeps the rod 21 in contact with the extensions 48; the keys are held thereby in their raised position.

The pawl 24 is operated by an angular lever 4| pivotally mounted on a stud 42 .of the frame of the machine (Figs. 2 and 3). the'lever 4I projects into thepath of the rod 21.

The other arm 44 abuts on the free end of the pawl 24.

'I'he device works as follows: By depressing the numeral key 3| the foot 36 (Fig. 6) strikes against the selecting pin 3 and presses the same downwardly in the carrier `frame |I, I2 until the upper end I3 is ush with the upper face of the plate II. The projection |4 (Fig. 5) forces the shank I8 of the blade spring |5 backward, the latter` again secures the pin I3 in its lowermost position. The selecting pin I3 in this position projects in the path 45 of a slide 41 which is guided in the frame of the calculating machine, and-which is moved in the 'I'he .said slide 41 is provided with a rack 48 which operates a toothed gearing as described below. While the selecting pin I3 below the foot 35 is pressed downwardly the key 3| presses the rod 21 downwards by means of its extension 48 (Fig. 6), in the' direction of the'arrow H (Fig. 3). The angular lever v4| is moved in the direction of the arrow J and its arm 44 strikes against the tree end of the pawl 24 in the direction of the arrow K (Fig. 2). The tooth 25 (Fig. 1) of the pawl 24 is brought out of contact with the lug |8 of the selecting pin I3 nearest to the pawl 24. The carrier frame I8, by the action of the spring I9, is now drawn in the direction of the arrow E (Fig. 1) until the next following selecting member I3 (Fig. 6) strikes with its face I3" against the foot 35 which is still in its depressed position. If now key 3| is released it will be raised bythe spring 49 (Fig. 9) and thereupon the rod 21 will be returned to its original position by a spring (not shown). The pawl 24 is returned by the spring 26 until it is again in the path of the lugs |8 of the selecting pin I3 of the 0-row. The pins which have been previously displaced are of such dimensions that the tooth 25 is returned into the path of the lug I8, before the foot 35 is out of engagement with the face I3 (Fig. 6) of the selecting pin I3. If therefore the foot 35 proceeds in its upward movement the selecting pin I3 is set free after the pawl 24 has resumed its initial position. The carrier I8 being free to follow the spring I9 (Fig. 1) slides in the direction of the arrow E until the lug I8 of the foremost selecting pin I3 strikes against the tooth 25 oi' the pawl 24. The carrier I8 is arrested thereby. When the lug I8 strikes against the tooth 25 the pawl 24 takes up thestroke and swings out against the action o f the spring 22. The latter cushions the stroke and returns the pawl 24 when the carrier I8 assumes its correct final position and is ready for being operated again by striking another or even the same numeral key. The carrier I8 performs its movements very quickly and there is no need to insert a pause between the striking of the keys, the latter may be operated in very quick succession. f

An arm 43 of4 In case where in place of one selecting pin I3 of the 0-row two are to be simultaneously pressed down, the key 32 is depressed'. Bystriking the key 32 the foot 36 is being moved downwardly and it comes to strike against the two lugs I8 (Fig. '7) of two` consecutive selecting pins i I3. If the downward movement of the key is being proceeded with the selecting pins I3 are pushed downwardly vuntil the foot 3 6 strikes against the plate I Simultaneously the tooth 25 of the pawl 24 has been brought out of engagement with the lug I8 of the selecting pin in such a manner that the carrier I8 is moved under the action of the spring I9 in the direction of the arrow E (Fig. 1). 'I'he carrier I8 comes to rest as' soon as the nearest selecting pin |3a (Fig. 7) strikes with its lug |8 against the foot 36 of the key 32. When released the key 32, by the action of spring 49, returns to its initialposition (Fig. 7). As soon as the foot 38 comes out of engagement with the lug I8 the carrier I8 moves again under the action of the spring I9. lIt moves in the direction of the arrow'E (Fig. 1) until the lug I8 of the selecting pin |3a strikes against the tooth 25 of the pawl 24. The carrier I8 is therefore being moved for a distance which is equal to the distance between two consecutive selecting pins I3.

To operate three selecting pins I3 of the O-row at the same time the key 33 is used which works similarly to key 32. Only the dimensions are different and there are always three pins moved instead of only two.

It is evident that not only three but also four or more selecting pins may be moved at the same time.

The machine comprises one slide 41 i'or each row of selecting pins I3. .To each slide 41 one end of a coiled spring 59 is attached, the other end being connected to the frame of the machine. The slides 41 are held in theirin-operative position against the action ofv spring 59 by means o! a hand lever 50, link 68, lever 6I and rod 5I. To the hand lever 58 the one end of a spring 33 is connected, the other end being fixed to the trarnev of the machine. By moving the lever 58 against the action of the spring 63 in the direction oi' the arrow (Fig. 9) the slide 41 is permitted to be moved by spring 59. The slide 41 is withdrawn by the spring 59 in the direction of arrow 52 until the nose 45 strikes against the pin I3 which previously has been set. 'Ihe slide 41 rotates by means of the rack 48 the toothed gear 55 of a counting or adding device which may be of any known construction. Moreovera spur wheel 63 is rotated which operates a printing device 54.

The number keys 1 to 9 are provided with the usual extensions corresponding to the extensions 48 of the keys 3I-32-33, and these usual extensions 48 operate on the rod 21 in the same manner as the keys 3 |-32-33. That is to say, whenever a number key I to 8. ,isv depressed it will depress the bar 21 and cause actuation of the pawl 24 so that the pawl 24 will release 'the stop I8 adjacent to it and permit the box of pins tomove one-hait step untilthe next pin I3 strikes the foot oi' the ykey exactly as if the 0 key, 3|. had been depressed. When the respective number key then again rises, the foot of that key releases the num'- ber pin 4| 3 so that the box of pins can advance. through the second half oi.' the step. At the same time the rod 21 rises and releases the pawl 24 so that this pawl, upon the next half step of the box of pins, again drops into position in front of the next stop I8 and again arrests the box ot pins. f

'It is therefore unnecessary to depress the "6 key 3i, upon depression of any of the number keys i to 9 in order to release the box oi pins.

lt is principally for pin carriage escapenflent under control of numeral keys othei1 than aero `keys ii- 33' that pawi 24 is swung by bail 2li. When the carriage is escapedby keys 3i33 pins i3 of the'zero row are depressed flush with plate il so that swinging of pawl 24 in the direction of arrow K is not essential.

Whilethe' form of mechanism herein shown and described is admirably adapted to' I ulll the objects primarily stated, it is to loe understood that it is not intended to conne the invention to the one form of embodiment herein shown and described, vasit issusceptible of embodiment in various forms, all coming within the scope of the claim which followsf What is claimed ist- In a. calculating machine, a pin carriage having rows of selecting pins from 0 to 9, a set of pin v -setting keys from 0 to .9, means continuously tending to advance said `carriage in one direction,

an escaner/nent ior effecting a reieeee ep id cere riage for step by step movement, a shit common to all of said setting keys, eoi'lnectione between said shitting rod and said eseayen'ient whereby upon'depression of a key tor vsetting a selecting pin corresponding thereto the escapo ment will be operated to ,allow a singlesten ectu= ation of said carriage; in combination auxiliary key cooperating with said shiftingr rod arid the zero row of said selecting pins and in cluding means to set a predetermined ninnber greater than one of said selecting pins ci said last named row and effecting said escapenient to permit said carriage to advance a distance equal to the number of step-distances correspondins,f to

the number of selecting pins set by said auxiliary key, said selecting pins Which are controlled by said auxiliary key having lugs and said auxiliary key having e. foot to engage the lugs of the predetermined number of selecting pins and be itself engaged by the lug of the next succeeding nin es n l stop.

EUGEN BENNINGER.

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